CCDB → Angiosperms → Cyperaceae → Gahnia
| Taxon name | Status | Median (n) |
| Gahnia setifolia Hook. | Accepted | 50 |
| Mariscus globosus (H. Mann) Kuntze | Synonym of Gahnia aspera subsp. globosa (H. Mann) J. Kern | 40 |
| Gahnia beecheyi | Synonym of Gahnia beecheyi H. Mann | 48 |